Page 1311 - Foton Workshop Manual - Aumark (BJ1099)

HEATING AND AIR CONDITIONING - REFRIGERANT 41-31

5. Check for leakage with dedicated electronic detector
(a). Complicated and expensive, it can sensitively detect a certain compound, regardless
the intervention of other substances.Take the dedicated detector of R-134a for
example. It is highly sensitive and selective, which can not only accurately detect
the leaking points, but also identify whether the refrigerant is R-134a.Due to its high
sensitivity, during operation, pay attention to the contamination in the surrounding,
or it may lead to detection error.
6. Check for leakage with fluorescent dye
(a). Fluorescent dye generates fluorescence under UV, which is added into coolant or
refrigerant. In case of leakage, test the exterior of the system with a UV lamp and
find out the leaking point.

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